The Millers lost 5-1 on the opening day of the season.
But loan arrivals could be on the way before the weekend.
The Millers have until 31 August to bring players in temporarily.
The Millers lost their opening game 5-1 at Brentford.
The Millers lost 5-1 at Brentford
Proctor is coming back from a serious knee injury.
Ben Purrington, Jerry Yates and Dominic Ball have already left.
Purrington has joined AFC Wimbledon on a season-long loan.
The Millers want last season’s loanee back at the club.
Warne met with the media this afternoon.